http://www.nytimes.com/2008/05/31/opinion/31sat4.html?_r=2&oref=slogin&oref=sloginExcerpt...
No matter what you call it, it adds up to the same thing. Millions of animals are crowded together in inhumane conditions, causing significant environmental threats and unacceptable health risks for workers, their neighbors and all the rest of us.
The astonishing increase in the number and size of confined animal operations has been spawned largely by the very structure of American farm supports, which always has been skewed in a way that concentrates farming in fewer and fewer hands. As both of these reports make clear, the so-called efficiency of industrial animal production is an illusion, made possible by cheap grain, cheap water and prisonlike confinement systems.
In short, animal husbandry has been turned into animal abuse. Manure — traditionally a source of fertilizer — has been turned into toxic waste that fouls the air and adjacent water bodies. Crowding creates health problems, resulting in the chronic overuse of antibiotics.